A novel binaphthyl (1) and three novel benzophenone derivatives (2-4) have been isolated from the fungus (Ascomycetes) Daldinia concentrica. Their structures have been established by a combination of high resolution NMR spectra, X-ray crystallographic analysis and chemical degradation. Compounds 2 and 3 possess plant-growth inhibitory activity.
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Hashimoto et al. (1994) studied this question.